Abstract
In this study, a novel piezoelectric energy harvester (PEH) based on the array composite spherical particle chain was constructed and explored in detail through simulation and experimental verification. The power test of the PEH based on array composite particle chains in the self-powered system was realized. Firstly, the model of PEH based on the composite spherical particle chain was constructed to theoretically realize the collection, transformation, and storage of impact energy, and the advantages of a composite particle chain in the field of piezoelectric energy harvesting were verified. Secondly, an experimental system was established to test the performance of the PEH, including the stability of the system under a continuous impact load, the power adjustment under different resistances, and the influence of the number of particle chains on the energy harvesting efficiency. Finally, a self-powered supply system was established with the PEH composed of three composite particle chains to realize the power supply of the microelectronic components. This paper presents a method of collecting impact energy based on particle chain structure, and lays an experimental foundation for the application of a composite particle chain in the field of piezoelectric energy harvesting.
Highlights
An intelligent monitoring system consisting of environment, mechanical vibration, and structural health conditions generally employs many low-power sensors
To overcome the drawbacks of the piezoelectric energy harvester (PEH) constructed with a one-dimensional chain of spherical particles reported in previous studies [13,14,15], a novel design of PEHs based on the composite spherical particle chain was introduced and experimentally verified in this study
PEHs, we studied the structure of composite spherical particle chain, energy harvesting performance, and the power supply performance of the energy harvester to the wireless sensor
Summary
An intelligent monitoring system consisting of environment, mechanical vibration, and structural health conditions generally employs many low-power sensors. An impact imposed onto a vertical chain of homogeneous spherical particles can generate strong nonlinear solitary waves propagating along the chain. The nature of low attenuation of solitary waves makes the one-dimensional chain of spherical particles an ideal option for collision or impact energy transmission. To overcome the drawbacks of the PEHs constructed with a one-dimensional chain of spherical particles reported in previous studies [13,14,15], a novel design of PEHs based on the composite spherical particle chain was introduced and experimentally verified in this study. In order to improve the charging speed and energy harvesting density of PEHs, we studied the structure of composite spherical particle chain, energy harvesting performance, and the power supply performance of the energy harvester to the wireless sensor. The study provides the experimental basis for the engineering application of PEHs
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